main() is one call into internal/cli (closes #160)

cmd/netwatch-server/main.go parsed the command line, ran the check-cidr
and prepare-data-dir subcommands and built the fx application itself;
the Go style guide puts all of that in internal/ or pkg/. The new
package internal/cli does it, with the same arguments, messages and
exit codes. main() is now os.Exit(cli.Main(os.Stderr, Appname, Version,
os.Args[1:], cli.RunServer)): Main takes the writer for errors and the
function that runs the server, so its tests give it a buffer and a
function that fails them. Appname and Version stay in main, where the
build sets Version. The function behind prepare-data-dir also takes the
volume and the user's name, so its own tests give it a temporary
directory and the user they run as.

Model: opus-5-5

.dockerignore

@@ -73,12 +73,9 @@
 
 # This repository's own entries, after the shared content above: the
 # frontend build, the viewport test's output, the binary `make build`
-# writes and the reports `make run` stores, and Go test binaries,
-# coverage output and log files at the root.
+# writes and the reports `make run` stores, and log files at the root.
 /dist
 /tmp
 /netwatch-server
 /data
-/*.test
-/*.out
 /*.log

README.md

@@ -55,8 +55,7 @@ either one is broken. We provide:
 - `script/build` — build the frontend for production into `dist/`, then the
   static `netwatch-server` binary into the repo root with its version stamped
   in: `VERSION` from the environment, or when that is unset or empty,
-  `git describe --tags --always --dirty` inside a git checkout, as
-  `script/docker` does, then `dev`
+  `git describe` inside a git checkout, then `dev`
 - `script/run` — build with `script/build`, then run `netwatch-server` with its
   defaults (see [Settings](#settings))
 - `script/clean` — remove what `script/build` writes

TODO.md

@@ -36,20 +36,6 @@ Run `make frontend-viewport-test` in CI as its own step; it is not part of
   the error from looking up the `netwatch` user, which the test image does not
   have. Others give the functions behind the subcommands input they take and
   input they refuse, and check the exit code and what they write to stderr
-- 2026-10-19: when `VERSION` is unset or empty, `script/build` stamps the
-  version from `git describe --tags --always --dirty`, as `script/docker` does
-  ([#156](https://git.eeqj.de/sneak/netwatch/issues/156)). Without `--tags` it
-  skipped lightweight tags, so `make run` could report a commit where the image
-  built from the same tree reported the tag. Checked once with a lightweight tag
-  on a scratch clone: `make build` stamped it
-- 2026-10-19: `.dockerignore` keeps Go test binaries and coverage output at the
-  root out of the build context, with `/*.test` and `/*.out` in the repository's
-  own section ([#155](https://git.eeqj.de/sneak/netwatch/issues/155)). Such
-  files went into the build context of every `docker build` in `script/` and
-  were copied into the lint, test and build stages. Checked with a probe image
-  that copies the whole context: `x.test` and `x.out` planted at the root no
-  longer land in it, and nothing else changed. The entries match only at the
-  root, so the same files in a subdirectory still reach the image
 - 2026-10-19: `.gitea/workflows/check.yml` is the sneak/prompts copy at
   `0653579` ([#153](https://git.eeqj.de/sneak/netwatch/issues/153)). Its
   checkout step sets `fetch-depth: 0`, so CI clones all history and tags, and

script/build

@@ -10,10 +10,9 @@ main() {
     cd "$ROOT"
     "$ROOT/script/yarn" build
 
-    # VERSION comes from the environment. Unset or empty, it is
-    # `git describe --tags --always --dirty`, as in script/docker, or
-    # "dev" where there is no git or no repository history.
-    version="${VERSION:-$(git describe --tags --always --dirty 2>/dev/null || echo dev)}"
+    # VERSION comes from the environment. Unset or empty, it is git
+    # describe, or "dev" where there is no git or no repository history.
+    version="${VERSION:-$(git describe --always --dirty 2>/dev/null || echo dev)}"
 
     CGO_ENABLED=0 go build -trimpath \
         -ldflags "-s -w -X main.Version=$version" \